Looks like the answer is B
But I am not sure, could be A, I know planets don't shrink when they are cold and unless the asteroid has mercury or mercury is on the planet already and the asteroid pierces it, it is not C.
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Answer:</h2><h2>THE ANSWER IS TROPICAL</h2>
Answer:
Westward expansion meant that the US acquired ever increasing amounts of land, and needed people, farmers, to settle there so it could maintained without a huge military presence. This led to massive immigration in the second half of the 19th century, as mostly Europeans came here seeking to finally have their own land.
It also added vast resources to the United States, both in terms of potential agricultural production and things like gold, silver and timber.
It stimulated the construction of the Transcontinental Railroad, and added new states to the country.
It further aggravated the divide between north and south, and accelerated the onset of the Civil War.
Explanation:
The largest landlocked harbor in the world is B. San Francisco Bay. It is located in Northern California.
